FasTrak is an "electronic toll collection system" used in California. Once you set up an account, you get a transponder that simply debits your account balance whenever you pass through a toll booth. The system uses RFID technology to broadcast your account information to the toll booth receivers. According to Hack A Day, the system is anything but secure.

If you're buying an A8 this year, prepare to spend a lot of time getting to know your new MMI system. We have consistently thought that Audi's buttons-and-knob interface is the best, and it looks like they've put an entire NASA team on the job of making it better. A seven-inch TFT screen with 800x400 resolution is now controlled by an 8-position joystick. Moving from one screen to another is done via "elegant crossfades," which sounds a bit PowerPoint-ish, but we'll wait until we see it to judge. And among other improvements, navigational maps can be rendered in "birds-eye perspective" 3D, with topographical map coloration. The only thing missing is the Encyclopedia Britanica. You can check out the exhaustive press release after the jump.